Common mistakes Part 1

1. Complete the sentences below using the correct form of the verbs:

1. If you treat (treat) her so unfairly she'll walk out of the job.
2. Could you phone me when................. (you / have) the results of the test?
3. By the time they........................ (arrive) the match will be over.
4. If Kathy................... (get) in touch next week, I'll let you know.
5. Let's go out for a drink after we.............. (finish) these accounts.
6. I don't like unexpected visitors, so I hope she rings before she.......... (arrive)!
7. You can't drive a car in England until you............. (be) seventeen.
8. You................ (have to / retake) the exam if you......... (fail) it. 
   
   
   
   
   Clear here for the answers